Taxi advertising device



Jan. 21, 1930, E. DOBROWSKY 1,744,705

r L TAXI ADVERTISING DEVICE Filed May 9, 1927 5 Sheets-Sheet 1 WiTNESSES ATTORNEY Jan. 21, 1930. E. DOBROWSKY TAXI ADVERTISING DEVICE Filed May 9, 1927 5 Sheets-Sheet 2 INVENTOR Emmanaelflo5lmmr7q z ATTORNEY Jan. 21', 1930. E. DOBROWSKY TAXI ADVERTISING DEVICE 5 Sheets-Sheet 3 Filed May 9, 1927 I E R "HTNESSES ATTORNEY Jan. 21, 1930. DQBROWSKY 1,744,705

TAXI mvERTIsme DEVICE Filed llay 9, 1927 5 Sheets-She'et 4 2/ v as Al IORNEY Jan. 21, 1930. E. DOBROWSKY v 1,744,705

I TAXI ADVERTISING DEVICE Filed llay 9, 1927 5 Sheets-Sheet 5 INVENTOR 9.3 Enzmanuellfa firozmr? ikw/iwlfi BY I WiTNESSES LG I 1 Patented Jan. 21, 1930 PATENT FFIQE EMMANUEL DOBBOWSKY, OF NEW YORK, N. 'Y.

TAXI ADVERTISING DEVICE Application filed May 9, 1927. Serial No. 189,956.

advertisements in succession which can be readily seen by the occupants of the vehicle.

A further object is to provide a device of this character having a suction motor operatively connected to the manifold of an internal combustion engine such as commonly employed on taxicabs, busses and the like.

A further object is to provide improved means for automatically changing the sign or advertising matter exposed to view;

A further object is to improve upon the construction disclosed in my copending application Serial No. 41,819, filed July 6, 1925.

lVith these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts, which will be more fully here-.

inafter described and pointed out in the claims.

In the accompanying drawings Figure 1 is a view in front elevation of my improved advertising device;

Figure 2 is a view in vertical section, through the device, the View being taken on the line 22 of Figure 4;

Figure 3 is a view similar to Figure 2, the view being taken on the line 33 of Figure t;

Figure 4 is a sectional plan view taken on the line H of Figure 2;

Figure 5 is a view in vertical longitudinal section taken on the line 55 of Figure 4;

Figure 6 is a view in transverse section through a cylinder and the reciprocating frame; the view being taken on the line 66 of Figure 5;

Figure 7 is a view in longitudinal section through the suction motor showing the same in connection with adjacent parts;

Figure 8 is a view similar to Figure 7 showing the parts in a different position;

Figure 9 is a fragmentary plan View of the ratchet pawl 52 and its mounting;

Figure 10 is a view in front elevation showing the valvecontrolling mechanism of the suction motor;

Figure 11 is a view similar to Figure 10 showing the parts in a different position;

Figure 12 is a view in transverse section on the line 1212 of Figure 10;

Figure 13 is a view in elevation, somewhat diagrammatically illustrating the operation of the ratchet pawl 52 I Figure 1a is a perspective view of the slide plate Figure 15 is a view partly in elevation and partly in section showing my improved device in connection with a taxicab;

Figure 16 is a view in front elevation illustrating a modification;

Figure 17 is a sectional plan view of the device shown in Figure 16;

Figure 18 is a fragmentary view in section on the line 18-18 of Figure 17.

1 represents the casing of my improved taxi advertising device, illustrated in detail in Figures 1 to 15, inclusive. This casing 1 is located in the upper front portion of the passenger compartment of a taxicab 2 or other analogous vehicle so that it may be readily seen by'the occupants of the vehicle.

My improved device or apparatus includes a suction motor A and an advertising asscnr blage B with mechanical means between the motor and the advertising assemblage causing the latter to display its advertisements in regular succession.

The motor and the advertisingassemblage are both enclosed in the casing 1. In the form of the invention illustrated in Figures 1 to 15, inclusive, the motor is secured or mounted in the rear portion of the casing with the advertising assemblage in the front portion of the casing, and an opening or window 3 is provided through which the advertisements may be seen.

In the form of the invention illustrated in Figures 16, 17 and 18 the casing is elongated and the motor A is located in one end of the casing and the advertising assemblage B in the other end of the casing so that a longer or narrower device as a whole is provided but theworking parts and operation are precisely the same in both cases so that the description hereinafter of the mechanism will apply alike to both forms of the device.

The advertising assemblage B includes a central drum 4 carrying a-circular series of pivotally mounted or swinging plates or cards 5 which are held back by a spring finger 6 located at the top of the casing and which when they pass said spring finger fall by gravity to a vertical position so that at least two of these plates or cards are in substan-. tially vertical alinement and may contain advertising indicia as shown in Figure 1.

The drum 4 has a central shaft or arbor 7 removably coupled at one end to a bearing 8 and at its other end having a reduced end 9.

blage but it is of course desirable that thisv mounting be such as to permit the assemblage to be removed and replaced so that the device may carry any advertising matter and said advertising matter may be changed from time to time. 1

A toothed wheel 12 is fixed to turn with the shaft or arbor 7 and is located at one end of the advertising assemblage, and this toothed wheel is held against retrograde movement b means of a pivoted dog 13 having a spring 14 secured to the casing and bearing thereagainst, holding the dog against the teeth of the wheel 12 and allowing said wheel to turn in a forward direction only.

The suction motor A, shown in longitudinal section in Figures 7 and 8, includes a pair of alined cylinders 15 and 16 open at the outer ends and secured to a central head 17. The open outer end of the cylinders 15 and 16 have central bearings 18 for piston rods 19, and said piston rods are secured to pistons 20 located in the respective cylinders 15 and 16 A frame 21 is secured tothe front of the head 17 and has parallel rails 22 therein for the mounting and guidance of a sliding plate 23, shown in perspective in Figure 14. I

The head 17 is provided with a pair of transversely positioned valves 24 and 25, respectively. These valves 24 and 25 have longitudinal ports 26 and 27 in their respective ends. Blocks 28 are secured on the valves 24 and 25 intermediate their ends and are movable in recesses 29 in the head 17. These blocks are cushioned at their ends to prevent noise of contact with the walls of the recesses, and coil springs 30 are located around the valves between the blocks and walls of the recesses, tending to move the valves in one nected by a pipe 32 with the manifold 33 of the engine 34 so as to create a suction through the pipe and manifold.

The valves 24 and 25 are adapted to project through the head opposite to the point of attachment of the manifold 31 and have perforated ends 35 which are adapted to be engaged in turn by the slide plate 23 above referred to. i

This slide plate 23 has a longitudinal slot 36 therein receiving a pin or fixed guide member 37 on the head 17, and enlargements 38 are provided on the ends of the slide plate 23 which are alternately engaged by a pivoted arm 39 mounted in the frame 21. This arm 39 is pivotally mounted between its ends on the frame 21 and is connected atone end by a coil spring 40't0 the frame 21.

It will be noted that this spring 40 is disposed parallel to the arm when the arm is in vertical position but when the arm is moved past vertical position or past dead center the spring will throw the arm to either of its extreme positions, and when the lower end of this arm engages the respective enlargements 38 on plate 23 it will slide the same from one position to another.

lVhen the plate is slid to one position, as shown in Figure 7, the valve 25 will be forced inwardly while the valve 24 will be permitted to project outwardly and be held in this position by its spring 30. When the valves are in the position shown in Figure 7 air is sucked through the port 26 of the valve 24, drawing the piston 20 in the cylinder 15 toward the central head 17, at the same time, when the piston 20 in cylinder 16 moves outwardly it will suck air into the cylinder through the port 27 in valve 25.

When the arm 39 is moved to a reversed position the position of the valves will be reversed and the operation will of course be reversed with respect to the pistons in the cylinders.

The piston rods 19 above referred to are secured to a rod frame 41 carrying the rings 42 mounted to slide on the cylinders 15 and 16, and these rings 42 have keyways 43 therein receiving keys 44 on the cylinders to pre vent turning motion of the rod frame on the cylinders.

The rings 42 of the rod frame 41 have fingers 45 thereon, which are adapted to engage the ends of a sliding rod 46 mounted in the frame 21 and extending through a slot 47 in the arm 39. On this rod 46 a pair of spaced cushioned bumpers 48 is located and is adaptedto engage the arm 3 and force it from one extreme position to a point beyond the dead center thereof when the spring 40 completes the throw of the arm to operate the plate 23 and shift the positions of the valves 24 and 25. p

49 represents a rocker arm which is pivotally secured in the casing 1 and has a resilient cam 50. thereon in the path of movethe ratchet wheel 53 to prevent retrograde.

movement of said ratchet wheel. The ratchet wheel 53 is provided with any desired number of laterally projecting pins 55 which are adapted to engage the teeth of the toothed wheel 12. I have shown one of these pins on the ratchet wheel 53 so that a complete revolution of the ratchet wheel will move the toothed wheel 12 a distance of two teeth, but it is obvious that a wider range of modification is possible as to the number of pins employed.

in the modification illustrated in Figures 16, 17 and 18, the mechanism is like that above described except that the motor and the advertising assemblage A and B, respectively, are in alinement and are in separate chamhers formed by a partition 56.

The operating mechanism is the same inboth cases and I have used like reference numerals to indicate like parts in both forms of the invention.

The operation is generally as follows:

The suction of the taxicab. engine causes the rod frame 41 to reciprocate as above explained, and this red frame engages the cam 50 and causes the rocker arm 49 to oscillate, the spring-pressed pawl 52 engages the ratchet wheel 53 and turns the same, and the pins 55 on the ratchet wheel turn the advertising assemblage B a distance of one tooth of wheel 12 at each operation. Hence the advertisements or signs are held for a certain period in view and are then changed so that the several plates or cards 5 are presented in regular sequence.

Various changes and alterations might be made in the general form of the parts described without departing from the invention and hence, I do not limit myself to the precise details set forth but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

I claim:

1. An advertising device of the character ing the ratchet wheel a distance of one tooth at a time.

2. An advertising device of the character described, including a casing, a rotary advertising assemblage in the casing, amotor in the casing, a toothed wheel constitutmg a part of the advertising assemblage, a ratchet wheel, a pin on the ratchet wheel adapted to engage a tooth of the toothed wheel at each revolution of the ratchet wheel,

. means operated by the motor for turning the ratchet wheel a distance of one tooth at a time, said last mentioned means including a rocker arm, and a spring-pressed pawl on the rocker arm engaging the ratchet Wheel.

3. An advertising device of the character described, including a casing, a rotary advertising assemblage in the casing, a motor in the casing, a toothed wheel constituting a part of the advertising assemblage, a ratchet wheel adapted to engage a tooth of the toothed wheel at each revolution of the ratchet wheel, means operated by the motor for turning the ratchet wheel a distance of one tooth at a time, said last mentioned means includ ing a rocker arm, a spring holding the rocker arm in normal position, a pawl on the rocker arm adapted to engage the teeth 'of the ratchet wheel, and a cam on the rocker arm engaged by the. motor to move the rocker arm.

4. An advertisin device, including'a casing, a rotary advertising assemblage mounted to turn in the casing, a toothed wheel constituting a part of said assemblage, a ratchet wheel adapted to engage a tooth of the toothed wheel at each revolution of the ratchet wheel, a suction motor in the casing, a rod frame mounted to reciprocate on the motor and moved thereby, a rocker arm, a cam on the rocker arm engaged b the rod frame as the latter is reci' rocated hy the motor, and a movable mem r operated by the rocker arm and transmitting motion to the ratchet wheel, 5. An advertising device, including a casmg, a rotary advertising assemblage mounted to turn in the'casin a toothed wheel constituting a part of saida'ssemb lagaa ratchet wheel adapted to engage a tooth of the toothed wheel at each revolution of the ratchet wheel, a suction motor in the casing, a rod frame mounted to reciprocate on the motor and moved thereby, a rocker arm, a cam on the rocker arm engaged b the rod frame as the latter is reciprocate a ratchet means operatively connecting said member and the toothed wheel, and rings constituting a portion ,ofthe rod frame and mounted to slide on the suction motor and one of said rin s keyed to said motor.

E MANUEL DOBROWSKY.

by the motor, a movable member operated by the rocker arm, 

